Biology Question Bank for Entrance Exams

For AIPMT Main other Medical Entrance Exam Prepration, Question Bank for Biology Classification of Living Organisms is given below.IMPORTANT POINTS

Nature is formed by nonliving and living organisms. One who has life and performs biological processes and manifests to enviroment is called living organism. Living organism possess certain characters like-reproduction, growth, development, reaction with environment adaptation and death. Besides these it has characteristics like metabalism, entropy, efficiency to maintain heredity. It produces new generation through reproduction. Energy is reguired during metabolism. Growth is a out put of metabolism. Quantity increases due to growth. Tissues and organs are formed due to differentiation and organigenesis occurs during development living organism shows efficiency of manifestations of feeling towards environment. It obtains adaptations to sustain in an environment and creates variations for adaptation. New species is created due to variation, hence biodiversity forms. It has efficiency to maintain heredity before its death.

There is an aggregation of different layers in living organisms. Membranes are formed of large molecules and molecules are formed from atoms. Cell is formed by membranus organelles. Tissue is constituted by group of cells which are present in organ and organ system. Body is composed by such organ systems. Such living organism is known as species. Population is structured by group of species. Such combined population of a same habitat form a biotic community. By interaction between biotic community and environment is constituted an ecosystem. By composition of ecosystems biosphere is constituted.

The study of living organisms can be done by nomenclature and identification characters. Living organisms are classified in to groups. Meaningfully called classification which has species, genus, order, family, class, phylum and kingdom. There are certain rules and regulations. Many scientist’s have contributed in this field. There are various sources for study.

From the given options select the correct option (a, b, c, d) Each carries one mark.

1. In taxonomic classification the correct sequence is ………. (CBSC-92)

(A) class-family-tribe-order-genus-species

(B) class-order-family-tribe-genus-species

(C) tribe-order-family-genus-species

(D) class-tribe-order-family-genus-species

2. The smallest taxon amongst following is ……….(PMT-94)

(A) class (B) order (C) species (D) genus

3. Taxonomically a species is ………. (PMT-94)

(A) A group of evolutionary related population

(B) A fundamental unit in the phylogeny of organisms

(C) Classical evolutionary taxonomy

(D) A community taken into consideration as an evolutionary base

4. Species is ………. (CBSC-94)

(A) not related to evolution

(B) specific class of evolution

(C) specific unit of evolution

(D) fertile specific unit in the evolutionary history of a race

5. Two words comprising the binomial nomenclature are ………. (DPMT-96)

(A) Family & genus (B) order & family (C) genus & species (C) species & variety

6. A group of plants or animals with similar traits of any rank is kept under ………. (PMT-96)

(A) species (B) genus (C) order (D) taxon

7. Which of the following is the correct sequence in the increasing order of complexity ? (PMT-97)